Samsung Galaxy M55 (12GB RAM + 256GB) has better RAM than Samsung Galaxy S21 Plus. Samsung Galaxy M55 (12GB RAM + 256GB) has more internal memory than Samsung Galaxy S21 Plus
| Name | Samsung Galaxy M55 (12GB RAM + 256GB) | Samsung Galaxy S21 Plus | 
| RAM | 12 GB | 8 GB | 
|---|---|---|
| Display | 6.67 in | 6.7 in | 
| Internal Memory | 256 GB | 128 GB | 
| Battery | 5000 mAh | 4800 mAh | 
| Camera | 50 MP + 8 MP + 2 MP Triple | 64 MP + 12 MP + 12 MP Triple | 
| Price | Rs. 21950 | Rs. 81999 | 
The launch Date of the first phone is April 8th, 2024. The cost of Samsung Galaxy M55 (12GB RAM + 256GB) is Rs. 21950. The launch Date of the second phone is January 14, 2021. The cost of Samsung Galaxy S21 Plus is Rs. 81999.
Samsung Galaxy S21 Plus has larger screen size of 6.7 inches in comparison to Samsung Galaxy M55 (12GB RAM + 256GB)'s 6.67 inch screen. Samsung Galaxy M55 (12GB RAM + 256GB) has Super AMOLED Plus Screen type where as Samsung Galaxy S21 Plus has Screen type. Samsung Galaxy S21 Plus has display density of 394 PPI & Samsung Galaxy M55 (12GB RAM + 256GB) has only 385 PPI display density. In terms of screen to body ratio, Samsung Galaxy M55 (12GB RAM + 256GB) has better screen to body ratio of ~ 90.1% than Samsung Galaxy S21 Plus's ~ 88.3%. Samsung Galaxy M55 (12GB RAM + 256GB) has 20:9 aspect ratio where as Samsung Galaxy S21 Plus has 20:9 aspect ratio.
Samsung Galaxy M55 (12GB RAM + 256GB)'s larger 12 GB RAM is better for playing games and all with respect to Samsung Galaxy S21 Plus's lower 8 GB RAM. Samsung Galaxy M55 (12GB RAM + 256GB) has more Internal Memory (256 GB) than Samsung Galaxy S21 Plus (128 GB).
Samsung Galaxy M55 (12GB RAM + 256GB)'s 50 MP + 8 MP + 2 MP Triple Rear Camera outclasses Samsung Galaxy S21 Plus's 64 MP + 12 MP + 12 MP Triple Rear Camera in terms of resolution. Samsung Galaxy M55 (12GB RAM + 256GB) will be better choice if you're looking to click lot of selfies as it has better 50 MP Front Camera in comparison to Samsung Galaxy S21 Plus's 10 MP Front Camera.
Both the phones has Android Operating System but the first one runs on version 14 and the second one on 10 version.
| Name | Samsung Galaxy M55 (12GB RAM + 256GB) | Samsung Galaxy S21 Plus | 
| General | ||
| Model | Galaxy M55 | Galaxy S21+ 5G | 
| Sim Type | Dual Sim, GSM+GSM (Hybrid Slot) | Dual Sim, GSM+GSM | 
| Dual Sim | Yes | Yes | 
| Sim Size | Nano+Nano SIM | Nano+Nano SIM | 
| Device Type | Smartphone | Smartphone | 
| Release Date | April 8th, 2024 | January 14, 2021 | 
| In The Box | Handset, Data Cable, Ejection Pin, Quick Start Guide | |
| Design | ||
| Dimensions | 76.5 x 163.9 x 7.8 mm | 75.6 x 161.5 x 7.8 mm | 
| Weight | 180 g | 200 g | 
| Bezel less | No | |
| Colors | Dark Blue, Light Green | |
| Display | ||
| Type | Color Super AMOLED Plus Screen (16M Colors) | Color Dynamic AMOLED 2X (16M Colors) | 
| Touch | Yes | Yes | 
| Size | 6.67 inches, 1080 x 2400 pixels, 120 Hz | 6.7 inches, 1080 x 2400 pixels, 120 Hz | 
| Aspect Ratio | 20:9 | 20:9 | 
| PPI | ~ 385 PPI | ~ 394 PPI | 
| Screen to Body Ratio | ~ 90.1% | ~ 88.3% | 
| Glass Type | Corning Gorilla Glass Victus | |
| Features | 1000 nits Brightness | Always-on Display, HDR10+ | 
| Notch | Yes, Punch Hole | Yes, Punch Hole | 
| Memory | ||
| RAM | 12 GB | 8 GB | 
| Storage | 256 GB | 128 GB | 
| Storage Type | UFS 3.1 | |
| Card Slot | Yes, (Hybrid Slot), upto 1 TB | |
| Connectivity | ||
| GPRS | Yes | Yes | 
| EDGE | Yes | Yes | 
| 3G | Yes | Yes | 
| 4G | Yes | Yes | 
| 5G | Yes | Yes | 
| 5G Bands | FDD Sub6: N1(2100), N3(1800), N5(850), N7(2600), N8(900), N20(800), N28(700), N66(AWS-3), TDD Sub6 N38(2600), N40(2300), N41(2500), N77(3700), N78(3500) | |
| VoLTE | Yes | Yes, Dual Stand-By | 
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot | 
| Wifi Version | 802.11a/b/g/n/ac/ax 2.4GHz+5GHz, HE80, MIMO, 1024-QAM | |
| Bluetooth | Yes, v5.2, A2DP, LE | Yes, v5.0, A2DP, LE | 
| USB | Yes, USB-C v2.0 | Yes, USB-C v3.2 | 
| USB Features | USB Tethering, USB on-the-go, USB Charging, USB Storage | USB on-the-go, USB Charging | 
| Extra | ||
| GPS | Yes, with A-GPS, GLONASS, GALILEO, BDS | Yes, with A-GPS, GLONASS, BDS, GALILEO | 
| Fingerprint Sensor | Yes, In Display | Yes, In Display | 
| Face Unlock | Yes | Yes | 
| Sensors | Accelerometer, Gyro Sensor, Geomagnetic Sensor, Light Sensor, Proximity Sensor | Accelerometer, Gyro, Proximity, Compass, Barometer | 
| 3.5mm Headphone Jack | No | No | 
| NFC | Yes | Yes | 
| Water Resistance | Yes, 1.5 m upto 30 min | |
| IP Rating | IP68 | |
| Dust Resistant | Yes | |
| Extra Features | Dual Stereo Speakers, Dolby Atmos, 4 Gen. OS Upgrade & 5 Year Security Update | |
| Camera | ||
| Rear Camera | 50 MP ƒ/1.8 (Wide Angle) 8 MP ƒ/2.2 (Ultra Wide) 2 MP ƒ/2.4 (Macro)  | 12 MP ƒ/1.8 (Wide Angle) 64 MP ƒ/2 (Telephoto) 12 MP ƒ/2.2 (Ultra Wide)  | 
| OIS | Yes | Yes | 
| Auto Focus | Yes | Yes | 
| Features | Panorama, HDR | Auto-HDR, Panorama | 
| Video Recording | 4K @ 30 fps UHD, 1080p @ 30 fps FHD | 8K @ 24 fps UHD, 4K @ 30/60 fps UHD, 1080p @ 240/30/60 fps FHD, 720p @ 960 fps HD | 
| Flash | Yes, LED | Yes, LED | 
| Front Camera | 50 MP ƒ/2.4 (Wide Angle) Punch Hole  | 10 MP ƒ/2.2 (Wide Angle) Punch Hole, Autofocus  | 
| Front Video Recording | 4K @ 30 fps UHD, 1080p @ 30 fps FHD | 4K @ 30/60 fps UHD, 1080p @ 30 fps FHD | 
| Technical | ||
| OS | Android v14 | Android v10 | 
| Custom UI | One UI 6.0 | |
| Chipset | Qualcomm Snapdragon 7 Gen1 | Samsung Exynos 2100 | 
| CPU | 2.4 GHz, Octa Core Processor | 2.9 GHz, Octa Core Processor | 
| Core Details | 1x Cortex-A710@2.4GHz & 3x Cortex-A710@2.36GHz& 4x Cortex-A510@1.8 GHz | 1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55 | 
| GPU | Adreno 644 | Mali-G78 MP14 | 
| Java | No | No | 
| Browser | Yes | Yes | 
| Multimedia | ||
| Yes | Yes | |
| Music | MP3, M4A, 3GA, AAC, OGG, OGA, WAV, AMR, AWB, FLAC, MID, MIDI, XMF, MXMF, IMY, RTTTL, RTX, OTA | Yes | 
| Video | MP4, M4V, 3GP, 3G2, AVI, FLV, MKV, WEBM | Yes | 
| FM Radio | No | No | 
| Document Reader | Yes | Yes | 
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery | 
| Size | 5000 mAh, Li-ion Battery | 4800 mAh, Li-Po Battery | 
| Fast Charging | Yes, 45W Fast Charging | Yes, 25W Fast Charging | 
| Wireless Charging | Yes, 15W | |
| Reverse Charging | Yes | Yes, 4.5W |